Welcome to Health Care Magic
It is "never too late to mend"
You can start now.
Most of the features can be explained by prolonged inactivity and anxiety
Start on a small scale / step up gradually / steadily and slowly / you can even overtake others.
Motivation is the first step - you now have it...
Life style changes help - walking up the stair instead of lift / vegetables and fruits instaed of junk food and so on. Dietician can help
Contact with people in similar group helps.
Trainers - as in a gym - help.
Wishing speedy recovery